Blowtorch



Fatented Feb. 24%, 192.5.

WTENT JOHN T..PETERSON, MAYVOD, ILLINOIS.

BLOW'IORGH.

Application filed May 31,

To all whom t may concern Be it known that I, lor-tn l. Pic'rnnsozr, acitizen of the United States, residing at Maywood, in the county of @ookand State of Illinois, have invented certain new and useful Improvementsinv Blowtorches, of which the following is a specilication.

This invention relates to improvements in torches and has for its objectto provide a soldering iron or branding` iron torch having a fuelsuper-heating chamber.

Another object of the invention is to provide a blow torch having aheating and Super-heating chamber extending over and approximately thefull length of the burner thereof.

Vith the above and such other objects in view as may hereinafter morefully appear I have invented the device illustrated in the accompanyingdrawings in which:

Figure 1 is an elevational sectional view of my improved blow torch; and

Figure 2 is a section on line 2-2 thereof.

Like reference characters indicate like parts throughout the followingspecification and in the several views in the drawings in which 1 is ablow torch embracing a fuel tank 2, a burner 3, a heating chamber et, asuper-heating chamber 5, a feed pipe 6 to the heating chamber, agenerating cup .7 and a needle valve 8. The feed pipe 6 is threaded atone end to the end wall 9 of the tank 2 and at its other end into thewall 10 of the burner casting 11. The casting 11 is divided into twocylindrical chanibers the larger chamber 12 being a burner chamber andthe smaller chamber 5 being a superheating chamber which extends toadjacent the outer end 13 of said burner chamber. A pipe 14 is screwthreaded into the end 15 of the pipe 6 and is held suspended therebywithin the chamber 5, said pipe 11i extend ing to very near the end wall1G of the chamber 5, said pipe 14 being of a smaller diameter than thechamber 5 and thus provides a passage for the heated gases to pass fromthe pipe 14 to enter the chamber 5, from which they are forcedrearwardly to the vertical bore 17 which runs down from the rear lowerportion of the chamber 5 through the casting 11. The inner end 18 of thecasting 11 is provided with an eXtension 19 which is threaded internallyto rec eive the threaded valve stem 2O of said needle valve 8, andexternally to receive the cap 21. The valve seat 22 is screw threaded1923. Serial No. 642,675.

and screws through the threaded bore 23 in the wall 2st of the burnerchamber 12. rThe stem 2O has a right angular handle end 25, whereby theneedle 8 may be adj usted. Vl`hc generator cup 7, has an integral plug26 er tending upwardly from .its bottom will to above the edge 27 of thecup, said plughaw ing its upper end screw threaded to thread into thelower end of the valve chamber 1'? whereby the member 26 forms a.closure for said valve chamber and a sup-port for said cup. A lug 28extends from the bottom of the chamber 12 and has an opening 29 thereinto receive the pin 30 which carries the branding iron 31. The plug` 32,screw threaded into the cap 33 carries an air plump 34 which is operatedby the stem 35 which is provided by the screw portion 36 whereby saidportion may be threaded into the plug to prevent movement when not beingused for pumping air in the tank 2.

The branding device may be removed from the torch and a soldering ironslipped or threaded into the open end thereof.

Having described my invention that which I claim to be new and desire toprocure by Letters Patent is:

1. A blow torch including an elongated fuel tank constituting in itselfa handle for the torch, a feed pipe communicating with the forward en'dof said tank and extending forwardly therefrom in axial alignment withsaid tank, a casting secured at its rear end to the forward end of saidfeed pipe and having two parallel chambers of approximately equal.lengths but of different diameters, the one of larger diameterconstituting the combustion chamber' of the torch and the otherconstituting a heating chamber, the latter being longitudinally alignedwith said tank and feed pipe, a pipe forming an extension of sai'd feedpipe located within said heating chamber and terminating in an open enda little to the rear of the forward end of said chamber, said castinghaving a downwardly extending passage communicating with the rear end ofsaid heating chamber and lying rearwardly of said combustion chamber, aneedle valve controlling an opening from said passage into saidcombustion chamber, the stem of said valve extending axially of said combustion chamber and terminating at its rear end in a handle just forwardof said fuel tank, and a priming cup located below said passage and therear of the combustion Chamber, said cup having an upward eXtensionthreaded at its upper end into the lower end of said passage to elosethe same.

2. A blow torch including an elongated fuel tank constituting in itselfa handle for the toreh, a feed pipe communicating with the forward endot said tank and extending forwardly therefrom in axial alignment withsaid tank, a casting secured at its rear end to the forward end of saiditeed pipe and having two parallel Chambers of approximately equallengths but ot different "diameters, the one ot larger diameteroonstituting the combustion chamber of a the toreh and the otherconstituting a heating Chamber, the latter heilig longitudinally alignedwith said tank and feed pipe, a pipe forming an extension of said Jfeedpipe located within said heating chamber and terminating in an open enda little to the rear of the forward end of said chamber, said Castinghaving a downwardly extending passage communicating with the rear end ofsaid heating chamber and lying rearwardly of said Combustion chamber, aneedle Valve controlling an opening from said passage into saidcombustion chamber, the stem ol said valve extending axially oi' saideolnbustion chamber and terminating` at its rear end in a handle just'forward of said fue] tank, and a priming eup located beneath saidcombustion Chamber.

JOHN T. PETERSON.

